The youngest woman to have become a self-made billionaire ever. A former comedian and door-to-door fax machine saleswoman, Blakely founded the privately held Spanx undergarment business at the age of 27. Sales took off in 2000 when Oprah Winfrey endorsed the product and then when she signed a contract with QVC, 8,000 pairs were sold in the first six minutes. Married to a former rapper named Jesse Itzler, Sara Blakely intends to leave at least half of her wealth to charity and of her success comments: “In my wildest dreams I never thought I would have started with their butts. As it turns out, that was a great place to start”. A truly inspirational and decent lady.